Since authorship markup requires a domain email, how can a community website allow users to link their Google+ profile?

[designquotes]

It seems that Google now requires authors to have a valid email on the domain. This is easy for the traditional web publication. But what about community websites like SEOmoz?

How can a community website allow users to link their Google+ profile?

Will community websites like SEOmoz be required to

1. Give all users a domain email

2. Ask users to validate the email address with Google?

Seems overly complicated.

[GCSMasone]

The write would be able to link up the profile via a Rel=Author Tag. You can learn more about Rel Author tags here.

Here is a good article about Rel Authorship from Search Engineland